Revealing mistake: As Mina is dancing with Dracula in the ball, we can see that in the mirror, she seems to be floating. Later on, as she is held by the arm and leg and spun around, we can see in the mirror that everything is in slow motion, even the orchestra conductor and a guest holding a fan.

For the scene in which Jonathan drives a stake into Lucy's heart, Steven Weber's reactions to getting doused in blood are real. For this particular sequence, Mel Brooks did not tell him what was going to happen.